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    Gout Cases on the Rise in U.S.

    Survey Shows More Than 8 Million Americans Have Gout
    By
    WebMD Health News
    Reviewed by Laura J. Martin, MD

    Nov. 10, 2010 (Atlanta) -- The latest figures on gout are in, and they’re disappointing, researchers say. Following a doubling of cases of the painful and often disabling arthritic condition from the 1960s to the 1990s, gout rates continued to rise through 2008, the most recent year studied.

    In a national health survey conducted in 2007 and 2008, 8.3 million Americans reported they had been told by their doctor they have gout.

    That corresponds to 3.9% of U.S. adults -- and represents a substantial rise from the 2.7% prevalence rate reported in the late 1980s and early 1990s, says Yanyan Zhu, PhD, a research assistant professor in clinical epidemiology at the Boston University School of Medicine.

    The increase was primarily due to rising rates among men -- from about 4% in the earlier time period to 6% in the later -- and older people, she tells WebMD.

    The gout rate was 7% among Americans aged 60 to 79 in the early 1990s, compared with 9% by 2008. Among those aged 80 and older, the rate more than doubled, from 6% to 13% over the nearly 20-year time span.

    Zhu reported the findings here at the American College of Rheumatology's annual meeting.

    The Painful Effects of Gout

    Gout occurs when too much uric acid -- a normal by-product of DNA metabolism -- builds up in the body. This leads to crystal formation. The crystals deposit in the joints, where they can wreak havoc.

    "Patients typically have sudden-onset attacks, in which one or more joints become red, inflamed, and angry looking. This is accompanied by what some patients say is the worst pain they have ever experienced," says John S. Sundy, MD, PhD, a gout expert at Duke University Medical Center in Durham, N.C.

    "Attacks of this inflammatory arthritis last three to 10 days, and at first, there can be months, even years, between attacks. As time goes on, flare-ups become more frequent -- and more painful," says Sundy, who moderated a news briefing to discuss the findings.

    Pre-Gout Condition on the Rise

    For the new study, Zhu and colleagues compared the results of two large-scale surveys of American adults, with specific regard to the question of whether a doctor had ever told them they had gout.

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